Providence Model: PRX-3C Function: Routing Box Input/Output Terminals: IN, SND-1, RTN-1, SND-2, RTN-2, OUT, CONT - Switches: CONT, L1, L2 - Power: DCV IN (Max 160mA) Body only. Used as a 2-loop system. Operation confirmed. (I have never used CONT, but the lamp lights up, so I think there is no problem.) Regarding this part, please understand that no claims will be accepted.